Around the world, leading wastewater treatment plants (WWTP) are becoming prosumers: both a producer and consumer of energy. In regular WWTPs, aeration, pumping, and solids processing account for most of the electricity that is used. In fact, energy is the second-highest budget item for these utilities after labor costs. Wastewater is a renewable resource Wastewater is a renewable resource in its own right Click & Tweet! with thermal, chemical, and hydraulic energy embedded within it. It is estimated by the American Biogas Council that the wastewater sector consumes 22 terawatt hours of electrical...

Taking a proactive stance, many cities are implementing green roof policies to mitigate the risks of climate change. By Robert C. Brears* Climate change is likely to increase the frequency and magnitude of both rainfall events and heat waves in...